Changes

In a play, the petroleum accumulations are commercial and undiscovered. In a petroleum system, the petroleum occurrences are already discovered.<ref name=ch03r7>Magoon, L., B., 1995, The play that complements the petroleum system—a new exploration equation: Oil & Gas Journal, vol. 93, no. 40, p. 85–87.</ref> Other differences are listed in the table above. Usually, a play is predicated without any particular petroleum system in mind. However, when a play is based on a particular petroleum system, it is called a complementary play.

In a play, the petroleum accumulations are commercial and undiscovered. In a petroleum system, the petroleum occurrences are already discovered.<ref name=ch03r7>Magoon, L., B., 1995, The play that complements the petroleum system—a new exploration equation: Oil & Gas Journal, vol. 93, no. 40, p. 85–87.</ref> Other differences are listed in the table above. Usually, a play is predicated without any particular petroleum system in mind. However, when a play is based on a particular petroleum system, it is called a complementary play.

[[The petroleum system concept]] is used two ways in exploration. By [[mapping a petroleum system]], an explorationist learns new play concepts to add new oil or gas fields to the petroleum system. This relation is shown in the following equation:

[[The petroleum system concept]] is used two ways in exploration. By [[Petroleum system mapping|mapping a petroleum system]], an explorationist learns new play concepts to add new oil or gas fields to the petroleum system. This relation is shown in the following equation:

:<math>\mbox{PS}_{\rm total} = \mbox{PS}_{\rm partial} + \mbox{CP}_{1} + \mbox{CP}_{2} + \mbox{CP}_{3}</math>

:<math>\mbox{PS}_{\rm total} = \mbox{PS}_{\rm partial} + \mbox{CP}_{1} + \mbox{CP}_{2} + \mbox{CP}_{3}</math>